Every time my promoted El Toro casts his Esprit de Corps power (+25% each accuracy & dodge), the flag he raises has the winged sandal Agility symbol on it instead of the bulls-eyes for either boost he's actually providing.
It seems to be providing the correct boost, it's (likely) just a graphics bug with the wrong symbol flag in the battle animations. Unless the REALLY LOUD trumpet fanfare is a bug too, I'd thought one of the updates was bringing down the volume on those?
Well, a meaning of Agility (the winged sandal in this case) is "marked by ready ability to move with quick grace" so I believe that the winged sandal is portraying the ability to strike and dodge quickly.